99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
package headsvc
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
|
|
clientcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
|
|
netmapCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
|
|
internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/internal/client"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
|
|
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
|
|
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
|
|
)
|
|
|
|
type ClientConstructor interface {
|
|
Get(clientcore.NodeInfo) (clientcore.MultiAddressClient, error)
|
|
}
|
|
|
|
// RemoteHeader represents utility for getting
|
|
// the object header from a remote host.
|
|
type RemoteHeader struct {
|
|
keyStorage *util.KeyStorage
|
|
|
|
clientCache ClientConstructor
|
|
}
|
|
|
|
// RemoteHeadPrm groups remote header operation parameters.
|
|
type RemoteHeadPrm struct {
|
|
commonHeadPrm *Prm
|
|
|
|
node netmap.NodeInfo
|
|
}
|
|
|
|
const remoteOpTTL = 1
|
|
|
|
var ErrNotFound = errors.New("object header not found")
|
|
|
|
// NewRemoteHeader creates, initializes and returns new RemoteHeader instance.
|
|
func NewRemoteHeader(keyStorage *util.KeyStorage, cache ClientConstructor) *RemoteHeader {
|
|
return &RemoteHeader{
|
|
keyStorage: keyStorage,
|
|
clientCache: cache,
|
|
}
|
|
}
|
|
|
|
// WithNodeInfo sets information about the remote node.
|
|
func (p *RemoteHeadPrm) WithNodeInfo(v netmap.NodeInfo) *RemoteHeadPrm {
|
|
if p != nil {
|
|
p.node = v
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// WithObjectAddress sets object address.
|
|
func (p *RemoteHeadPrm) WithObjectAddress(v oid.Address) *RemoteHeadPrm {
|
|
if p != nil {
|
|
p.commonHeadPrm = new(Prm).WithAddress(v)
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// Head requests object header from the remote node.
|
|
func (h *RemoteHeader) Head(ctx context.Context, prm *RemoteHeadPrm) (*objectSDK.Object, error) {
|
|
key, err := h.keyStorage.GetKey(nil)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("(%T) could not receive private key: %w", h, err)
|
|
}
|
|
|
|
var info clientcore.NodeInfo
|
|
|
|
err = clientcore.NodeInfoFromRawNetmapElement(&info, netmapCore.Node(prm.node))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("parse client node info: %w", err)
|
|
}
|
|
|
|
c, err := h.clientCache.Get(info)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("(%T) could not create SDK client %s: %w", h, info.AddressGroup(), err)
|
|
}
|
|
|
|
var headPrm internalclient.HeadObjectPrm
|
|
|
|
headPrm.SetClient(c)
|
|
headPrm.SetPrivateKey(key)
|
|
headPrm.SetAddress(prm.commonHeadPrm.addr)
|
|
headPrm.SetTTL(remoteOpTTL)
|
|
|
|
res, err := internalclient.HeadObject(ctx, headPrm)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("(%T) could not head object in %s: %w", h, info.AddressGroup(), err)
|
|
}
|
|
|
|
return res.Header(), nil
|
|
}
|